An abnormal curve of the lumbar spine is lordosis, also called sway back. An abnormal curve of the thoracic spine is kyphosis, also called hunchback. An abnormal curve from side-to-side is called scoliosis.
There are approximately 560,000,000,000 planets in outer space that scientists have discovered. In this solar system, there are eight planets. In this galaxy, there are likely between 50 billion and a trillion planets-or more. At this point, we can hardly guess.
How many planets are there like Earth? Data from the Kepler Space Observatory have been used to suggest that there may be more than two billion planets in our galaxy capable of supporting life. The number comes from extrapolating from selection of Sun-like stars studied by the telescope, which found that 22% of them have planets that are potentially Earth-like. An âEarth-likeâ planet is one that is small enough to be rocky (rather than being a gas giant like Jupiter or Saturn) and orbits its star within the âhabitable zoneâ.